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【单选题】
This big stone ________ at least a ton.A.
weighs
B.
is weighed
C.
had weighed
D.
had been weighed
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【简答题】患者，男性，30岁，因畏寒、发热、厌油、恶心呕吐、食欲缺乏、乏力就诊。诊断为甲型肝炎，收入院治疗。下列隔离措施错误的是A、不同病种病人应分室居住 B、密切接触病人时须穿隔离衣 C、室内保持无蝇、无蟑螂 D、不同病种病人书报可借阅 E、不同病种病人的食品不可交换 应采用哪种隔离A、血液隔离 B、消化道隔离 C、呼吸道隔离 D、昆虫隔离 E、保护性隔离
【单选题】患者，男性，35岁，因畏寒、发热、厌油、恶心呕吐、食欲缺乏、乏力就诊。诊断为甲型肝炎，收入院治疗，下列隔离措施不妥的是
A.
不同病种病人应分室居住
B.
护理病人时须穿隔离衣
C.
不同病种病人书报可借阅
D.
室内保持无蝇、无蟑螂
E.
不同病种病人的食品不可交换
【简答题】1. Most research and development projects some element of risk. 2. The government must take action to stop the fighting. 3. Time spent in education is a good of social and economic position. 4. Can ’...
【简答题】患者，男性，32岁，因发热、恶心、食欲缺乏伴尿黄、明显乏力7天入院，患者主诉症状出现前无明确诱因。查体巩膜皮肤中度黄染，肝下缘于肋下2cm触及，质软有触痛，脾未触及。实验室检查示ALT 832U/L，总胆红素70μmol/L。为了确诊最可靠的检查项目是A、抗HAV-IgG B、抗HBV-IgM C、抗HDV D、抗HEV E、抗HAV-IgM 该患者最可能的疾病是A、淤胆型肝炎 B、急性黄疸型肝炎...
【单选题】If average variable cost exceeds marginal cost, then:
A.
average variable cost is increasing and the average total cost is decreasing.
B.
the average variable cost is decreasing and the average total cost is increasing.
C.
both the average variable and average total cost are decreasing.
D.
the average variable cost is decreasing and the average total cost may be increasing or decreasing.
【单选题】张女士，32岁，因畏寒、发热、厌油、恶心呕吐、食欲不振、乏力就诊，诊断为甲型肝炎，收入院治疗。 因患者经常胃痛医生开出电子胃镜申请单，患者使用过的内窥镜浸泡消毒时间应不少于（ ）
A.
10min
B.
20min
C.
30min
D.
45min
E.
60min
【单选题】If average variable cost decreases as output increases, then:
A.
marginal cost is negative.
B.
marginal cost is decreasing.
C.
marginal cost is less than average variable cost.
D.
marginal cost is greater than average variable cost.
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